Part 8/13:
This revelation sheds new light on the evolution of Earth's climate, especially the Mid-Pleistocene Transition (MPT), around 1.2 million years ago. Prior to this, ice ages followed a roughly 41,000-year cycle dictated mainly by Earth's obliquity. Post-MPT, climate cycles shifted to around 100,000 years, aligning with eccentricity variations. Surprisingly, Earth's orbital parameters during the MPT did not change markedly, raising the question: what caused this shift?